125211563 has 4 divisors (see below), whose sum is σ = 130655568. Its totient is φ = 119767560.

The previous prime is 125211557. The next prime is 125211607. The reversal of 125211563 is 365112521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365112521 = 173 ⋅2110477.

It is a cyclic number.

It is not a de Polignac number, because 125211563 - 2¹⁴ = 125195179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125211533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2721968 + ... + 2722013.

It is an arithmetic number, because the mean of its divisors is an integer number (32663892).

Almost surely, 2^125211563 is an apocalyptic number.

125211563 is a deficient number, since it is larger than the sum of its proper divisors (5444005).

125211563 is an equidigital number, since it uses as much as digits as its factorization.

125211563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5444004.

The product of its digits is 1800, while the sum is 26.

The square root of 125211563 is about 11189.7972725157. The cubic root of 125211563 is about 500.2819250067.

The spelling of 125211563 in words is "one hundred twenty-five million, two hundred eleven thousand, five hundred sixty-three".